<a [routerLink]="['/home']" >home</a>
<a [routerLink]="['/product',3]">product</a>
<input type="button" value="product" (click)="toProduct()">

<a [routerLink]="[{outlets:{aux:'chat'}}]">聊天</a>
<a [routerLink]="[{outlets:{aux:null}}]">不聊天</a>
<router-outlet></router-outlet>
<router-outlet name="aux"></router-outlet>
